public final class SimpleStepExpression extends SlashExpression
EFFECTIVE_BOOLEAN_VALUE, EVALUATE_METHOD, EVENT_FEED_METHOD, INHERITED_CONTEXT, INSPECTION_CONTEXT, ITEM_FEED_METHOD, ITERATE_METHOD, locationId, MAX_SEQUENCE_LENGTH, MAX_STRING_LENGTH, NAVIGATION_CONTEXT, NODE_VALUE_CONTEXT, PROCESS_METHOD, PUSH_SELECTION, staticProperties, UNBOUNDED_LOWER, UNBOUNDED_UPPER, W3C_CONSUMING, W3C_FREE_RANGING, W3C_GROUP_CONSUMING, W3C_MOTIONLESS, WATCH_METHOD| Constructor and Description |
|---|
SimpleStepExpression(Expression start,
Expression step) |
| Modifier and Type | Method and Description |
|---|---|
Expression |
copy()
Copy an expression.
|
ExpressionCompiler |
getExpressionCompiler()
Return the compiler of the SimpleStep expression
|
SequenceIterator |
iterate(XPathContext context)
Evaluate the expression, returning an iterator over the result
|
Expression |
optimize(ExpressionVisitor visitor,
ExpressionVisitor.ContextItemType contextItemType)
Perform optimisation of an expression and its subexpressions.
|
Expression |
typeCheck(ExpressionVisitor visitor,
ExpressionVisitor.ContextItemType contextItemType)
Type-check the expression
|
addToPathMap, computeCardinality, computeDependencies, computeSpecialProperties, equals, explain, getControlledExpression, getControllingExpression, getFirstStep, getIntegerBounds, getItemType, getLastStep, getLeadingSteps, getRemainingSteps, getStep, getStreamability, getStreamingAdjunct, hashCode, isAbsolute, isInheritedAttributePath, isPermittedAxis, iterateSubExpressionInfo, iterateSubExpressions, map, promote, promoteFocusIndependentSubexpressions, replaceSubExpression, setStartExpression, setStepExpression, simplify, toPattern, toStreamingPattern, toString, tryToMakeAbsoluteadoptChildExpression, checkForUpdatingSubexpressions, checkPermittedContents, computeStaticProperties, doPromotion, dynamicError, effectiveBooleanValue, evaluateAsString, evaluateItem, evaluatePendingUpdates, explain, getCardinality, getColumnNumber, getColumnNumber, getConstructType, getContainer, getDependencies, getEvaluationMethod, getExecutable, getExpressionName, getHostLanguage, getImplementationMethod, getIntrinsicDependencies, getLineNumber, getLineNumber, getLocationId, getLocationProvider, getObjectName, getProperties, getProperty, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, getSystemId, hasVariableBinding, implementsStaticTypeCheck, isSubtreeExpression, isUpdatingExpression, isVacuousExpression, iterateEvents, markTailFunctionCalls, process, resetLocalStaticProperties, setContainer, setEvaluationMethod, setFiltered, setFlattened, setLocationId, staticTypeCheck, suppressValidation, typeErrorpublic SimpleStepExpression(Expression start, Expression step)
public Expression typeCheck(ExpressionVisitor visitor, ExpressionVisitor.ContextItemType contextItemType) throws XPathException
SlashExpressiontypeCheck in class SlashExpressionvisitor - an expression visitorcontextItemType - the static type of "." at the point where this expression is invoked.
The parameter is set to null if it is known statically that the context item will be undefined.
If the type of the context item is not known statically, the argument is set to
Type.ITEM_TYPEXPathException - if an error is discovered during this phase
(typically a type error)public Expression optimize(ExpressionVisitor visitor, ExpressionVisitor.ContextItemType contextItemType) throws XPathException
ExpressionThis method is called after all references to functions and variables have been resolved to the declaration of the function or variable, and after all type checking has been done.
optimize in class SlashExpressionvisitor - an expression visitorcontextItemType - the static type of "." at the point where this expression is invoked.
The parameter is set to null if it is known statically that the context item will be undefined.
If the type of the context item is not known statically, the argument is set to
Type.ITEM_TYPEXPathException - if an error is discovered during this phase
(typically a type error)public Expression copy()
copy in class SlashExpressionpublic SequenceIterator iterate(XPathContext context) throws XPathException
iterate in class SlashExpressioncontext - the evaluation contextXPathException - if any dynamic error occurs evaluating the
expressionpublic ExpressionCompiler getExpressionCompiler()
getExpressionCompiler in class SlashExpressionCopyright (c) 2004-2013 Saxonica Limited. All rights reserved.